Rubber shoe-sole for turn-shoes



H. C. EGERTN.

RUBBER SHU'E SOLE FOR TURN SHOES.

APPUCAUON me!) Dc.2.191s.

1,352,736. Patented Sept. 14, 1920.

UNITED STATES HENRY C. EGERTON, F RIDGEWOOD, NEW JERSEY.

RUBBER SHOE-SOLE FOR TURN-SHOES.

Specification of Letters Patent. YPatentd Sept, 14, 1920,

Application led December 2, 1918. Serial No. 284,935.

To all whom it may concern.'

. Be it known that I, HENRY C. Eomrron, a

citizen of the United States, and resident of Ridgewood, county ofBergen, State of New Jersey, have made a certain new and usefulInvention Relating to Rubber Shoe-Soles for Turn-Shoes, of which thefollowing is a specification taken in connection with the accompanyingdrawing.

This invention relates es eciall to rubber or other composition soles aapted for turned shoes or the like in which a sewing Hap of fabric,which may advantageously be strengthened by more or less coating orimpregnating it with rubber or other suitable somewhat flexiblestrengthening material, and which may also if desired be folded, doubledor reinforced to have the desired strength and thickness, is cemented orvulcanized to the rubber shoe sole and held in position thereonreferably in connection with stiflening fa ri'c or fibrous elements,which may contain henolic condensation cementing and sti ening materialand be held in position u on the sewing Hap layers or members. hissewing flap member may, if desired, extend beneath the convie. or otherfibrous stiil'ener layers throughout their entire extent, and may berubberized on the side adjacent the rubber sole so as to act as aconnector fabric or member promoting the union of these parts. When theupper has been stitched to this sewing flap in the usual Way the sewingfiap may be turned inward and more or less contained in a seam recessformed in the shoe sole adjacent the sewing iiap; and by forcing orhammering the seam into this recess a more nearly flush joint may beobtained, which may of course be still further covered by an insolewhich may be inserted thereover after the shoe up er has been turned andfinished in the usua Way.

In the accompanying drawing showing in a somewhat diagrammatic wayvarious illustrative embodiments of the invention,

Figure 1 is a perspective View partly in section showing portions of ashoe sole and related members.

Fig. 2 is a corresponding sectional view showing the parts in separatedposition for greater clearness. f

Fig. 3 is a sectional viewr through the assembling and molding apparatusfor forming such a shoe sole.

Fig. 4 is a; sectional view showing another arrangement with the partsin separated position; and

Fig. 5 is a sectional view throu h still another arrangement of shoesole e ements indicated in se arated position in connection with a' mo dadapted for uniting and vulcanizing them.

The shoe soles which may, if desired, include integral heels in somecasesmay be of any suitab e rubber or other composition and in the caseof a vulcanized rubber shoe sole 1 the rubber composition may beselected with particular reference to its gri pi and wearing qualitiesWhile the desiredpstilille5 ness may be secured through theincorporation of additional stiffening layers or ,elements. Severallayers or members 3 of fabric, paper or other fibrous material, suchascotton fiber, cotton batting, paper ulp, tc. or mixtures thereof, may beusedp for this purpose and may be coated or preferably quite thoroughlyimpregnated with suitable phenolic condensation cementing material,such, 'for instance, as bakelite, conden site or redmanol varnishcompositions. Two

layers of 8 oz. canvas thoroughly impreg nated with balrelite varnishand dried may under pressure be cemented and united t0- gether to form astrong and stiff member or stiffening sheet about a 16th f an inch thickwhich may ive ample stii ess to the rubber shoe sole. sindicated inFi s.1 to 3 these st'il'ener membersB preerab y do not extend to the edges ofthe shoe sole 1 but are arranged a sixteenth of an inch or an eighth ofan inch inside of these edges so that projecting edge portions 2 are eftaround the sole to give the finished shoe a more desirable appearance.connectormember 4 of canvas or other suitable fabric ,inayadvantageously be interposed between the stiffener members and therubber sole and may be formed with reinforced or doubled edge portionsprojecting beyond the stiiener so as to serve as a sewing flap to whichthe u per of the turned shoe may be attached.

' e connector fabric may 'advantageously in most cases be formed with a5frictioned or other rubber coating 10 on the side ad-' jacent the rubbersole and the edge portions of this connector member may be doubled backu on themselves so as to form a. doubled ge 12 adjacent the edge of theshoe sole, this part of the connector then being rated in the fabric bcarried inward to a sufiicient extent to secure am )le connection withthe other parts of the s oe sole, and if desired, this connector membermay be turned back on itself at about the point 13 and its edges carriedoutward to about t'he point 12, the rubberized face of this fabricengagin the rubberized face of the adjacent fo d thereof and leaving arelatively uncoated exposed surfacerto more securely and strongly unitewith the henolic condensation cementing material o the still'enermembers. In some cases the fabric may be cut or gored around the curvedtoe and heel portions of the connector member so as to minimizeundesirably doubled portions and make the sewing flap of more uniformthickness at these parts, although such additional thicknesses of thefabric are notfin all cases objectionable where ample rubber has beenincorpothe original coating or otherwise during t e forming of thiselement. This fabric layer may of course be folded up and compressed atits doubled portions so as to secure the adhesion thereof so that ashaped piece is secured which may be more readil assembled with theother elements in mo ding the sole. As shown in Fig. 3 the sole may bemolded and vulcanized advantageously by laying the coated and driedstiil'ener members 3 in the mold section 15 preferably after they havebeen somewhat heated to facilitateI bending and then `the connectorsewing Hap member 4 may be put in place upon them and properly centeredby the use of `any desired means such as locating pins or the like toinsure the proper positioning of these parts, then another coperatingmold element may be put in place on the bottom mold 15 so as to benddown and hold the sewing fiap. This may be effected conveniently` byhaving a multiple or one-piece mold element 20 adapted to coperate withthe bottom mold 15 and positioned with respect thereto by the pins 18which may have the tapered upper ends 19 coperating with holes 20 inthis upper mold section. This mold section 2O may have a retainer 'langon its inner edge which is adapted to foi-ce the sewing flap 5 downwardand inward into engagement with the gripping rim 16 on the lower moldsection so as to c amp it between these parts when the locking orsecuring hooks 38 are snapped over the coperatin pins to lock the moldsections toget 1er. e sewinrr Hap may thus be denitely and securely heldin position and more or less shaped up at the same time duringrthemolding and vulcanizing of the sole. his mold section may also, ifdesired, be formed with a recess 22 corresponding to the edge 2 of theshoe sole, the outline of which is of course defined by the face 23 ofthis mold section. The vulcanizable rubber blank 1 which may be more orintegree less profiled or sha ed up may then be put in place in the moland forced into contact with the other elements therein by the top moldsection, such as 25, which may in some cases be advantageously providedwith the holes 2G coo' erating with the alining, pins 19. The mo d maythen be heated in any desired way while under pressure so that thevulcanizing heat and pressure is' secured which simultaneously unitesthe elements and cures the phenolic condensation cementing material inthe stiffener members so that all the parts are securely and permanentlyunited to form a unitary sole. A heat of 250 to 320J Fahrenheit for halfan hour or an hour more or less is usually suicient for this purpose,depending, of course u on'the rubber composition employed and t eparticular phenolic condensation cementing material used in connectiontherewith.

The upper members 7 which may have the scam portions 6 may of course besewed to the sewing flaps 5 in any suitable machine which preferablysomewhat compresses the edge portinos 2 of the rubber shoe sole whilethis sewing is taking place so as to make a better und neuter joint. Theline of this stitching 8 is indicated in Fig. 1 and when this sewing iscompleted the seam' may be turned over so that the seam members are bentor folded more or less into the seam recess 9 which may be formed aroundthe sole adjacent the sewing iap as by vforming a suitable rojection 17around the mold section for t is purpose. The seam' members may ofcourse be hammered or forced into this recess and covered by an insoleapplied or cemented in place, suitable phenolic condensation cementingcompositions being desirable where the stilfener members 3 are exposedon the inner side of the sole. If desired, however a rubberized facinglayer, such as 14, indicated in Fi 2 may in some cases be applied to thesti ener layers and cemented thereto during the moldin operation so asto leave the frictioned or ot er rubber coating 10 exposed on the insideof the shoe sole to facilitate the cementing of an insole thereto byrubber cementing compositifns after the upper has been sewed to the soe.

Fier. 4.- shows another arrangement in whichtherubber or othercomposition shoe sole 27 is indicated as having substantially uniformthickness throughout. The connector sewing flap member 4 of fabric ma befolded upon itself so as to form the fol 12, the edge portion extendingback to about the point 13 and additional reinforcing fabric or stripsmay be incorporated in this edge portion 29 to form a sewing flap of thedesired strength and thickness. the edges of the connector member ma befolded outwardA to form the portion 11 which may on lits exposed sidebe'rela- If desiredf tively free from 'any rubberized coating so Vas tofacilitate cementing union with the one or more stiflener members or`fabric or fibrous layers 3 molded thereto. As indicated in this caseone or more fabric la' ers maybe inserted within the edge fo d 12 ofsuch a connector member and this reinforcing fabric 28 which may be aheavy woven'or braided ta'pe or the like may be rubberized on both sidesbefore being put in place so as to more effectively unite it to theother adjacent fabric portions. Such a connector sewing flap member mayof course be folded and temporarily cemented or united and thenassembled with the other arts and vulcanized and cemented together Vr1nthe same general Way as indicated in connection with the Fig. 3construction.

Fi 5 shows still another arrangement in which lthe sewing flap maycomprise one or more braided cords, such as 31, which may advantageouslybe inclosed within and secured tothe edge loops 32 of the connectorfabric. This may be readily accomplished by using a strip or layer 30 oflight canvas or other suitable Afabric which has been given a frictionedor other rubber coating on one side and applying it to the one or morestiifener members or fabric layers 3 which may be previously inserted inthe mold 34% and positioned therein as by the' locating pins 37 whichmay in some cases be withdrawn after the mold is closed or during theviilcanizing operation, if desired, so as to allow the holes to closeduring the molding operation. This connector fabric 30 may then be putin place and its edge portions Sl forced into the grooves 35 in the moldand then the braided cord 32 may be forced into these grooves and' theedge portions 33 of the connector fabi'ic may be brought back above thestiffener layers 3 so as to be carried in some cases to or adjacent vthecenter portions of the shoe sole. ln some cases it is `desirable to usean additional layer of connector fabric 39 which may advantageously becoated or frictioned with rubber on both sides so as to securely imitewith the connector layer and also with the rubber sole composition blank27 which may be forcedinto place and vulcan-V ized or united to theother arts when the top mold section 36 is force home and the moldheated for the desired time.

This invention has been described in connection with a number ofillustrative ein-y bodiments, forms, proportions, elements, parts,shapes, materials, compositions, methods of preparation. production anduse, to the details of nliich disclosure the invention is not of courseto be limited, since what is claimed as new and what is desired to besecured by Letters Patent is set forth in the appended claims:

1. T he integral rubber shoe sole for turn densation cementing andstifl'ening material i I cemented to vsaid sewing iap member so as toleave its edges projecting beyond the edges of said stiifener member.

2. The integral rubber shoe sole for turn shoes and the like whichVcomprises a sole, a rubberized fabric connector and sewing flap memberunited to said sole and having a reinforced multiple thickness edgeportion forming. a fabric sewing flap which is adapted to be sewed tothe shoe upper, a fabric stilfener member carrying cured phenoliccondensation cementing and stiffcning material cemented to saidconnector member so as to leave the sewing flap projecting beyond theedges of said stiffener member, said sole being formed with a seamrecess adjacent said sewing flap to accommodate the sewing iiap seamportions after the upper has been sewcd thereto.

The integral rubber shoe sole for tuin slices and the like whichcomprises a sole, a rubberized fabric connector and sewing fiap memberunited to said sole and having a reinforced multiple thickness edgeportion forming a fabric sewing flap whichv is adapted to be sewed tothe shoe upper and a fabric stiifener member carrying cured phenoliccondensation cementing and stiffening material cemented to saidconnector member so as to leave' the sewing flap projecting beyond theedges of said stiffener member.`

4. The integral rubber shoe sole for turn shoes and the like whichcomprises a isole, a fabric sewing flap member united to said sole andhavin a reinforced multiple thickness edge portion forming a fabricsewing flap which is adapted to be sewed to the shoe upper and a fabricstiiener member carrying cured phenolic condensation stiffening materialsecured to said sewing flap member so as to leave its edges Vp'r ectingbeyond the edges of said stiffener me ber.

5. The shoe sole for turn shoes and the like which comprises a sole, afabric sewing fiap member united to said sole and forming y a fabricsewing flap which is adapted to be member Carrying eurefl phenoliccondensation stll'ening material semental to Said sewing flap member toSupport and strengthen smid. eewng: flap.

T. 'llw Shoe sole for turn Shoes :md the like which comprises a`composition sole, :l reinforced fibrous sewing flap member united tosaid sole und forming a sewing flap to which 'llze shoe upper is adaptedto be sewed, and a brous securing memberv carrying cured phenoliccondensation Stffe# mg materlal secured to sald sewmg flap member tosupport and strengthen said sewing

